Re: 2 days ago, only 1 cylinder firing, yesterday BOTH, today just 1 again.

UPDATE: Well, I rode to work yesterday, and the problem was way worse. It ran on the rear cylinder the entire 30 miles, hitting on the front maybe a few licks here and there. Started checking it out during some free time at work, bouncing ideas back and forth with another guy. We checked all the wiring, coils, cdi outputs, everything. We hooked up the other coil to the front cylinder, couldn't get anything. Started it back up, thinking maybe it just couldn't get warmed up that morning, it was a pretty cool ride in, about 60 degrees. Now it had fuel leaking out of the lower front exhaust joint. Very frustrating. Finally checked the vacuum hose to the stupid vacuum operated petcock, and it was full of fuel. So, I am certain that was a major part of my problem. Plugged the line and set it on prime and it ran great all the way home, and back to work today. I still need to do some checking and see if it still misses while it is warming up when I leave today. Being that this is my first Virago, (700), is it pretty normal to be running not so great for the first few minutes? I also noticed going through town today that it was a little rough, lurching and popping. I'm thinking that I may need to re-sync now that I'm not sucking all that extra fuel down one cylinder. Will probably do that Sunday. Does anyone know of a good source for a petcock rebuild kit?